Fluids
Water, syrup, oil, ketchup, shampoo.
What is the chemical composition of water?
H2O
What is meant by the term viscosity?
Viscosity is the measure of a liquids resistance to flow. The thickness or thinness of a fluid.
Mass is a measure of the amount of matter in an object or a substance.
What is flow rate?
Flow rate measures the volume of a fluid moving past a certain point in a given amount of time.
Humans are made up of how much water?
60-70%
What two states of matter make up a fluid?
Liquid and Gas
Liquids that have a low viscosity means?
It will flow quickly.
What is volume?
Volume is the amount of space occupied by an object.
The type of fluid that is flowing, the force pushing on the fluid, the size of the pipe or opening the fluid is flowing through, the type of surface over which the fluid is flowing.
Characteristics of a fluid?
Fluids do no have a fixed shape. Fluids take the shape of a container. Fluids do have a definite volume.
What aren't solids considered to be fluids?
All fluids have the ability to flow, solids do not have this characteristic and solids have a fixed shape.
Examples of viscosity?
Molasses has a high viscosity compared to water.
What is density?
Density is the measure of the amount of matter in a given volume of substance.
What is the definition of cohesion?
Cohesion is the force of attraction between the particles of a substance. Fluids with slow flow rates have particles with greater cohesion.
What is a fluid?
Fluids are a substance that has no fixed shape and yields to external pressure. Fluids include two states of matter, liquid and gas. Particles can move past each other in this state.
Name a liquid that is more dense than a solid.
Liquid mercury.
If you increase the temperature, what happens to the fluids viscosity?
Which states of matter are the most and least dense?
Solids are usually the most dense, then liquids and then gases are the least dense.
What is the definition of adhesion?
Adhesion is the force of attraction between particles of fluids and particles of other substances. Fluid particles adhere to the sides of containers, pipes, and tubing.
What are some human uses of fluids?
Humans use fluids for drinking. Humans are made up of fluids (about 60%-70% of our bodies is water). Blood transports materials to/from our cells. Sweat is how humans cool their bodies.
Are fluids essential to life?
Yes. We must breath oxygen and drink water to live.
What factors affect viscosity?
Cohesion is the force of attention between the particles of a substance. The stronger the attraction, the more viscous the fluid will be.
Adhesion is the force of attraction between particles of a fluid and particles of other substances.
Density=Mass/Volume
What is the particle theory of matter?
The particle theory of matter helps to explain why fluids act the way they do. The particle theory of matter states that all matter is made up of tiny particle, particles have empty spaces between them, particles are moving randomly all the time, particles move faster and spread farther apart when they are heated, particles attract each other.